Well then, take it from somebody who has. The GT-40, Cobra, and the Explorer all use the same lower. The uppers are all different, but not a whole lot different in overall flow.
The flowbench results I have seen have gone from the Explorer flowing 189 to the Cobra at 199 and the GT-40 at 200.
http://www.fordmuscle.com/archives/2...on/index.shtml
http://www.geocities.com/MotorCity/F.../Explorer.html
http://www.ronmorrisperformance.com/06tech/
These three sites I pulled up in about 3 minutes of searching. The Explorer isn't much off, if any, from the GT-40 or Cobra.